NORWALK --Painter's Supply has opened at 106 Main St. in Norwalk in the Genuario's building. The brick building is the former site of Genuario's Floor Covering Center, a family-owned store that operated there from 1956 to 2011 before moving to a new location at 61 Main Street. Genuario's moved out of the location in 2007. This is the ninth store for Painter's Supply, which offers paints, painting supplies and some tools. There are also Painter's Supply stores in Connecticut and Massachusetts.